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// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information.
using System;
using System.ComponentModel;
using System.Data;
using System.Linq;
using Moq;
using Xunit;
using Assert = Microsoft.TestCommon.AssertEx;
namespace WebMatrix.Data.Test
{
public class DynamicRecordTest
{
[Fact]
public void GetFieldValueByNameAccessesUnderlyingRecordForValue()
{
// Arrange
var mockRecord = new Mock<IDataRecord>();
mockRecord.SetupGet(m => m["A"]).Returns(1);
mockRecord.SetupGet(m => m["B"]).Returns(2);
dynamic record = new DynamicRecord(new[] { "A", "B" }, mockRecord.Object);
// Assert
Assert.Equal(1, record.A);
Assert.Equal(2, record.B);
}
[Fact]
public void GetFieldValueByIndexAccessesUnderlyingRecordForValue()
{
// Arrange
var mockRecord = new Mock<IDataRecord>();
mockRecord.SetupGet(m => m[0]).Returns(1);
mockRecord.SetupGet(m => m[1]).Returns(2);
dynamic record = new DynamicRecord(new[] { "A", "B" }, mockRecord.Object);
// Assert
Assert.Equal(1, record[0]);
Assert.Equal(2, record[1]);
}
[Fact]
public void GetFieldValueByNameReturnsNullIfValueIsDbNull()
{
// Arrange
var mockRecord = new Mock<IDataRecord>();
mockRecord.SetupGet(m => m["A"]).Returns(DBNull.Value);
dynamic record = new DynamicRecord(new[] { "A" }, mockRecord.Object);
// Assert
Assert.Null(record.A);
}
[Fact]
public void GetFieldValueByIndexReturnsNullIfValueIsDbNull()
{
// Arrange
var mockRecord = new Mock<IDataRecord>();
mockRecord.SetupGet(m => m[0]).Returns(DBNull.Value);
dynamic record = new DynamicRecord(new[] { "A" }, mockRecord.Object);
// Assert
Assert.Null(record[0]);
}
[Fact]
public void GetInvalidFieldValueThrows()
{
// Arrange
var mockRecord = new Mock<IDataRecord>();
dynamic record = new DynamicRecord(Enumerable.Empty<string>(), mockRecord.Object);
// Assert
Assert.Throws<InvalidOperationException>(() => { var value = record.C; }, "Invalid column name \"C\".");
}
[Fact]
public void VerfiyCustomTypeDescriptorMethods()
{
// Arrange
var mockRecord = new Mock<IDataRecord>();
mockRecord.SetupGet(m => m["A"]).Returns(1);
mockRecord.SetupGet(m => m["B"]).Returns(2);
// Act
ICustomTypeDescriptor record = new DynamicRecord(new[] { "A", "B" }, mockRecord.Object);
// Assert
Assert.Equal(AttributeCollection.Empty, record.GetAttributes());
Assert.Null(record.GetClassName());
Assert.Null(record.GetConverter());
Assert.Null(record.GetDefaultEvent());
Assert.Null(record.GetComponentName());
Assert.Null(record.GetDefaultProperty());
Assert.Null(record.GetEditor(null));
Assert.Equal(EventDescriptorCollection.Empty, record.GetEvents());
Assert.Equal(EventDescriptorCollection.Empty, record.GetEvents(null));
Assert.Same(record, record.GetPropertyOwner(null));
Assert.Equal(2, record.GetProperties().Count);
Assert.Equal(2, record.GetProperties(null).Count);
Assert.NotNull(record.GetProperties()["A"]);
Assert.NotNull(record.GetProperties()["B"]);
}
[Fact]
public void VerifyPropertyDescriptorProperties()
{
// Arrange
var mockRecord = new Mock<IDataRecord>();
mockRecord.SetupGet(m => m["A"]).Returns(1);
mockRecord.Setup(m => m.GetOrdinal("A")).Returns(0);
mockRecord.Setup(m => m.GetFieldType(0)).Returns(typeof(string));
// Act
ICustomTypeDescriptor record = new DynamicRecord(new[] { "A" }, mockRecord.Object);
// Assert
var aDescriptor = record.GetProperties().Find("A", ignoreCase: false);
Assert.NotNull(aDescriptor);
Assert.Null(aDescriptor.GetValue(null));
Assert.Equal(1, aDescriptor.GetValue(record));
Assert.True(aDescriptor.IsReadOnly);
Assert.Equal(typeof(string), aDescriptor.PropertyType);
Assert.Equal(typeof(DynamicRecord), aDescriptor.ComponentType);
Assert.False(aDescriptor.ShouldSerializeValue(record));
Assert.False(aDescriptor.CanResetValue(record));
}
[Fact]
public void SetAndResetValueOnPropertyDescriptorThrows()
{
// Arrange
var mockRecord = new Mock<IDataRecord>();
mockRecord.SetupGet(m => m["A"]).Returns(1);
// Act
ICustomTypeDescriptor record = new DynamicRecord(new[] { "A" }, mockRecord.Object);
// Assert
var aDescriptor = record.GetProperties().Find("A", ignoreCase: false);
Assert.NotNull(aDescriptor);
Assert.Throws<InvalidOperationException>(() => aDescriptor.SetValue(record, 1), "Unable to modify the value of column \"A\" because the record is read only.");
Assert.Throws<InvalidOperationException>(() => aDescriptor.ResetValue(record), "Unable to modify the value of column \"A\" because the record is read only.");
}
}
}
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